Mechanical Design Specifications — Previous Page
Direction of Rotation (Viewed from Coupling End)....................................................................... CCW
Casing Thickness, Minimum ....................................................................................................5/16"
Corrosion Allowance................................................................................................................. 1/8"
Impeller...........................................................................................Standard Single Plane Balanced
Optional Extra................................................................................................Dynamically Balanced
Flanges — ASME/ANSI B16.5 Rating................................................................................ Class 300
Facing........................................................................................................... Standard Raised Face
Optional Extra.......................................................................................................... Ring Type Joint
Finish.................................................................................................................................. 125 Ra
Seal Chamber & Bearing Housing Jacket Pressure, Maximum............................................... 125 psig
Suction Pressure, Maximum Max. Working Pressure Less Pump Developed Head
Seal Chamber Pressure
With Balance Holes*
................................................................Suction Pressure Plus .06 x Pump Developed Head in PSI
Without Balance Holes
................................................................Suction Pressure Plus .75 x Pump Developed Head in PSI
* Pumps are normally furnished with balance holes
Horsepower Rating — Maximum 
R4140
R440
R450
R480
  @ 3500 rpm
100
200
250
–
  @ 1750 rpm
40
100
125
300
  @ 1160 rpm
25
–
75
200
Bearings, Type Ball Bearings, Oil Lubricated 
Thrust Bearing (Angular Contact Pair)
7309BG
7311BG
7312BG
 7317BG
Radial Bearing
6309
6311
6312
6316
Seal Chamber Dimensions (Large Taper Bore) 
 
Length (Depth)
3"
3"
41/2"
47/8"
Inside Diameter (Bore Diameter)
31/2"
37/8"
41/4"
 5"
Shaft Sleeve Diameter 
13/4"
21/8"
21/4"
 3"
Standard Bore (Stuffing Box) Dimensions 
Length (Depth)
3"
3"
37/8"
41/8"
Inside Diameter (Bore Diameter)
21/2"
27/8"
31/4"
 4"
Shaft Sleeve Diameter
13/4"
21/8"
21/4"
3"
Lantern Gland Width
5/8"
5/8"
3/4"
1"
Lantern Gland to Open End of Stuffing Box
11/2"
11/2"
11/2"
 23/8"
Packing Size, Square 
3/8"
3/8"
1/2"
1/2" 
Number of Rings with Lantern Ring
6
6
6
 6
Spacing
3G3
3G3
3G3
3G3
Number of Rings Lantern Omitted
7
8
7
 8
Pump Shaft Dimensions 
Span Between Bearings C to C
6"
53/16"
8"
 10"
Span Between Radial Bearing C and Impeller C
8"
83/16"
103/4"
 125/16"
Diameter at Coupling
11/8"
15/8"
15/8"
23/8"
Diameter Between Bearings
21/8"
21/2"
23/4"
4"
Diameter at Impeller
11/8"
11/4"
11/2"
21/4"
L3/D4 
Sleeved
101
44
78
36
Solid
55
27
26
23
MATERIAL
CLASS
MAXIMUM
WORKING PRESSURE
PUMPING TEMPERATURE
 
HYDROSTATIC TEST PRESSURE 
MINIMUM
MAXIMUM
R4140/R440
R450/R480
Carbon Steel
(Class 40)†
500 psig @ 650°F
 
-20°F
800°F @ 340 psig
850
 750
316SS
(Class 50)
500 psig @100°F
 -20°F
850°F @ 310 psig
†Carbon Steel with cast Iron trim. Also available with 316SS trim.
Seal Chamber Temperature vs. Pumping Temperature with respect to the GPM of cooling water flowing through the cooling jacket surrounding the seal chamber.

Standard Materials Of Construction
Part No.
Part Name  
Carbon Steel
(Cl. 40)
316SS
(Cl. 50)
3
 Impeller
C.I. (1)
316 (3)
*4
 Impeller Key
Steel (2)
316 (8)
5
 Casing
Steel (6)
316 (3)
5A
 Casing Drain Plug
Steel (2)
316 (8)
5C
 Casing Stud Nut
Steel (5)
5D
 Casing Stud
Steel (4)
*6
 Casing Back Cover Ring
Iron (7)
316 (3)
6A
 Casing Ring
Iron (7)
316 (3)
7
 Cradle Spacer
D.I. (16)
 
7A
 Bull’s Eye Oil Level Indicator (R4140)
—
 
Automatic Oiler (R440,R450 & R480)
—
 
7G
 Spacer to Bearing Housing Capscrew
Steel (2)
9
 Bearing Housing Foot
C.I. (1)
*9F
 Bearing Housing Foot, Jack Bolt R440 only
Steel (2)
*9G
 Bearing Housing Foot, Jack Bolt Nut R440 only
Steel (2)
*10
 Shaft Sleeve
316 (8)
*10K
 Shaft Sleeve Key
304 (9)
*12
 Impeller Bolt (Nut on R440)
Steel (2)
316 (8)
*12A
 Impeller Washer
Steel (2)
316 (8)
*12B
 Impeller Lock Washer
316 (8)
*12C
 Impeller Washer Pin
304 (9)
316 (8)
13
 Seal Chamber Gland
316 (8)
 
 Packing Gland
Steel (6)
316 (3)
14
 Gland Stud
Steel (4)
304 (9)
15
 Gland Nut
Steel (5)
304 (9)
*17
 Lantern Ring
C.I. (1)
316 (3)
*18
 Splash Collar – R440, R450 & R480 Only
C.I. (1)
22
 Casing Back Cover
Steel (6)
316 (3)
*22A
 Back Cover to Cradle Cap Screw
Steel (2)
*25
 Radial Bearing
—
*25A
 Thrust Bearing
—
*26
 Bearing Housing
C.I. (1)
*27
 Seal Ring
C.I. (1)
*28
 Bearing End Cover
C.I. (1)
*28A
 Bearing End Cover Cap Screw
Steel (2)
*29
 Pump Shaft
Steel (10)
316 (8)
*31
 Thrust Bearing Lock Nut
Steel (2)
*31A
 Thrust Bearing Lock Washer
Steel (2)
*54
 Throat Bushing
C.I. (1)
316 (8)
56
 Casing Foot
C.I. (1)
*56B
 Casing Foot Dowel
Steel (2)
*75B
 Retaining Ring (All Except R480)
Steel (2)
*76
 Oil Seal—Front (All Except R4140)
Buna (14)
 
 Labyrinth Seal—Front (R4140 Only)
Bronze & Viton n
*76A
 Oil Seal—Rear (All Except R4140)
Buna (14)
 
 Labyrinth Seal—Rear (R4140 Only)
Bronze & Viton n
77
 Casing Gasket
Grafoil (11)
*77B
 End Cover Gasket (All Except R4140)
Manila (12)
 
 End Cover Gasket (R4140 Only)
Buna (14)
*77E
 Oil Cooler Gasket (All Except R4140)
Fibre Sheet (13)
*80
 Bearing Housing Vent
—
*87
 Impeller Ring—Back (Optional)
Steel (2)
316 (3)
87A
 Impeller Ring—Front (Optional)
Steel (2)
316 (3)
95A
 Mechanical Seal Stationary
—
95B
 Mechanical Seal Rotary
—
*109
 
 Oil Cooler Assembly 
SS Tubing with Steel 
Fins and Steel Fittings
 
Material Specifications (Refer to Numbers in Parentheses)
(1) Cast Iron
(2) AISI 1020 100,000 YP
(3) 316SS — ASTM #A744 Grade CF8M
(4) AISI 4140, ASTM #A193-B7 Steel
(5) ASTM #A194 Grade 2 Steel
(6) ASTM #A216 Grade WCB Cast Steel ( -20 + 800°F )
(7) Hardened Iron
(8) AISI—316SS 		(9) AISI—304SS
(10) Alloy Steel —125,000 TS.
(11) Grafoil — Registered trademark of Union Carbide Corp.
(12) Manila Paper
(13) Fibre Sheet — Non-Asbestos Fibre
(14) Buna “N” Rubber
(15) Steel Finned, Stainless Steel Tube with Steel End Fittings
(16) Ductile Iron — ASTM-A536 Class 65-45-12
*Denotes parts interchangable in all pump sizes of same type. *Registered Trademark of the E.I. Dupont Co.
— Previous Page
 
Dean Pump Division
6040 Guion Road
Indianapolis, IN 46254
Phone:317-293-2930
Fax: 317-297-7028
E-mail: info@deanpump.com		 © 2003 Dean Pump Division
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